Motob



Jul 23, 1929. G. w. BURROW' MOTOR Filed May 6, 1926 10 FIGURE 2 FIGURE l FIGURE 4; Eat

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FIGUREfi FIGUREJ INVENTOR ATTORNEY Patented July 23, 1929.

UNITED STATES GEORGE VI. BURROW, OF N EAR CAMPBELL, CALIFORNIA.

MOTOR.

Application filed. May 6, 1926.

This invent-ion relates particularly to that type of motors in which the shaft is actuated through the medium of a rotary piston instead of the well-known reciprocating piston.

It is one object of the invention to pro vide motor of the character indicated in which a continuous rotating movement is imparted to the shaft without the use of recipro eating or intermittently moving parts.

It is another object of the invention to pro vide a motor of the character indicated wherein the chambers are effectually scavenged after each explosion when the motor is designed as a combustion engine.

it is also an object of the invention to provide a motor of the character indicated that will develop high power in proportion to its size and weight, that consists of few parts easily assembled and disassembled, economi cal to manufacture and highly etlicient in its practical application.

t is also an object of the invention to provide a motor in which there is but little loss of power through friction between moving parts.

In the drawing Figure 1 is a side elevation of the motor.

Figure 2 is a half section on line 22 of Figure 1.

Figure 3 is a sectional view on line 33, Figure 2.

Figure l is a'sectional view on line a t, Figure 1.

Figure 5 is a detail section showing the rotary piston construction on line 55 of F igure 3;

Figure 6 is a detail of the piston structure on line 66 of Figure 5.

Referring now more particularly to the drawing, I show at 1 an annular casting provided with brackets 2 by means of which it is mounted on any suitable support as 3. This casting 1 is provided with outwardly extending side flanges as 4 and has portions 5 of increased thickness at diametrically opposite points, these thickened parts having guideways 6 formed therein as shown. On either side of one of these portions 5 are formed orifices 7 and 8, shown in Figure 3, the orilice 8 being provided with a connection 9 through which a combustible mixture is introduced from a source of supply (not shown).

On each side of part 1 is mounted a plate 10 by means of bolts 11 and extending a distance inwardly toward the axis of the part as Serial No. 107,137.

shown. In one of these plates are formed two ports as 12 and 13. These ports are spaced a distance apart both radially and circumferentially and lie upon opposite sides of a radial plane bisecting the portions 5 and adjacent to the portion 5 opposite the ports 7 and 8.

Mounted in guideways 6 in one portion 5 and between the ports 12 and 13 are gates 14c. The stems 15 of each gate are connected at their outer ends by a bar 16 rigidly mounted on part 1 by a support 17. These stems slide in the said bar and carry collars 18 fixedly mounted thereon springs 19 being inserted between the collars and the bar as shown whereby to urge the gates inwardly.

A second set of gates constructed mounted and operated in the same manner are shown at 14 15 16, 17, 18, and 19 diametrically opposite to the above described parts, and located between the ports 7 and 8.

At 20 is shown a shaft concentrically positioned relative to part 1 and carrying an annular element 21 having cams 22-23 formed on its outer surface and positioned diametrically opposite to each other. The element 21 is somewhat smaller in diameter than the in ner circumference of part 1 thereby forming a chamber 24 therebetween, and the cams 22-23 are in working contact with the inner circumference of part 1. Since the chambe 24: is rectangular in transverse cross section the peak of each cam is slotted as at to receive overlapping bars 26 and a spring 2? arranged between the bars and the bottom of the slot, the lower edge of the side portions of the slot being bevelled as at 28. By this construction the bars 26 are held in close contact with the wall of part 1 and effectually prevents the passage of any gas therebetween. The sides of the element 21 are recessed to receive plates 10 packing being inserted between the two as at 29.

At 30 I show a valve plate mounted on one side of element 21 and secured by screws 31 and overlapping plate 10. This plate 30 is provided with offset slots 32-32 and 33 33 arranged to operate in conjunction with ports 12 and 13, the pairs of slots being concentrically arranged relative to the axis of shaft 20 as shown and the slots of each pair being arranged diametrically opposite to each other.

Enclosing each side of the structure de scribed is a face plate 3e. secured by the bolts 11, suitable packing being inserted between the same and plate or as shown at In this plate Zl-lis termed a combustion chamber 36 positioned to communicate with chamber iZ l; through the ports 12 and 13 when uncovered by the rotating valve plate I) This chamber 86 is provided with a spark plug ill, the tiniiine; mechanism and source of electrical S-uipply not being shown. The water jacket is indicated at 38, and a collar is shown at 39 bolted to plate 34L as at ll).

in this construction there are three main lifted features, namely, the annular part 1, the plates l(), and the plates 34;, all tied together by the bolts 11.

l The rotating parts comprise only the part 21. on shalt 20 and the valve plate 80 moun ed on the shaft and secured to part 21.

The operation of the motor as "follows, it being assumed that the same is in "lull operation with the smieral parts in the relative positions shown in the dra ving. The gates l-'l.---l-l-,=" are ilorced down into contact with the part i l by springs 1ll-l9 therel dividingz; the chaml :r Q-l into two equal parts. The cams 223 have just passed the gates s that the port 12 from. the combustion chamher 36 is opened through valve port 32 and between the cam 22 and gates .l-l, and the intake port 8 is opened into chamber 5 be tween ram 2.33 and gates ll. The port 13 is closed but the exhaust port 7 always open.

fin ei-zplosion occurs in chamber 36 and the expanding gases pass through ports 1232 into chamber Ell an d act upon the cam :22) and 'l'orre the member 21 and shaft to revolve. The amending flow into chamber 2%: as long as the port uncovers port 152 and at the same time the burnt gases in front of cam are forced out through the exhaust port '7 and a trash charge is being drawn into the chamber between cam and gates 14:. The fresh el'iarg 'e d awn into chamber 24 by the previous rotation of member 2i and now trapped between cam 23 and gates l l is new compressed between cam 23 and gates Ll; until the rotating}; plate brings portinto reg, istration with the port 1?; thereby permitting the compressed charge to flow into the combustion chamber 36. These several parts are so designed that the valve P01? 33 registers with port13 a moment before port 12 is closed so that some oi? the trcsh charge will blow completely throiurh the chamber nd an ellicient scavenging is secured,

lit is c-ear from the toreg i ription that cam for instance, is acted upon by the expanding gases during the full period 01 enpansion; that it ellectually and completely ('lischarg'es the burnt ues which have acted upon cam 25; that it follows the step or ex hausting the burnt gases by induction a fresh charge into the compression chai'nber and at the same time compres es a charge and drives it nto the explosion chamber. 'l'noe the ram 23 'l unetious in. the same way it Follows tha in one complete revolution of shaft 20 two combustible charges have been inducted into chamber 2%, exploded, and discharged therei'rom,

It is to be understood, o't course, that while i have herein shown and described but one specific embodiment of the invention changes in form, construction, and method of operation may be made within the scope of the ap pended claims.

1 claim l. A rotary motor comprising an annular chamber, a revoluble shalt concentrically mounted therein, an annular member of less diameter than said chamber mounted on said shalt to revolve in said chambe' and having cam suril aces termed thereon in diametrically opposite relation to each other and ezdtemlin ontwardlv to engage the wall of said chamber, radially arranged members resiliently mounted in opposed relation to each other on diai'netrically opposite sides of said chamber and eng gagirr the periphery of said cam member, a combustion chamber, ports connectiua said chambers on either side of said gate members, and a rotary valve plate carried by said shaft and adapted to open and close said ports at given intervals in its revolution.

A rotary motor comprising an annular lianilze having side walls extending inward- ,y a di aance toward its axis, a shatt concentricall mounted therein, an annular member of less diameter than said chamber mounted on said shaft to revolve in said chamber and overlapping said side walls and having cam surtaces formed on its perimeter and extending outwardly to engage the wall of said chamber, a valve plate mounted to rotate as a unit with said shaft and annular member and overla niing said side wall of the chamber in (opposed relation to said annular member, a combustion chamber mounted in operative relation to the valve plate, the wall of said first mentioned chamber having ports formed therein in operative relation to said combustion chamber, and gate members resiliently mounted in. said first mentioned chamber between said ports and engaging said. annular member. l

A rotary motor comprising astator having an annular chamber formed therein, a rotary piston operatively mounted in said char Abe-r, means positioned on diametrically opposite sides of the chamber wall for maintaining; constant sliding engagement with the rotor, means positioned on diametrically opposite sides of the rotor for maintaining consliding engagement with the chamber wall, a combustion chamber having ports connecting; with said first chamber on either side of one o'l said first mentioned means, intake and exhaust ports positioned on either side at the other of said first mentioned ineaus, and an apertured plate mounted as an integral part of said rotor and extending outwarc ly therefrom to effect intermittent registration of the apertures therein with said combustion chamber ports.

at. A rotary motor comprising a stator having an annular chamber formed therein, a rotary piston operatively mounted in said chamber, means positioned on diametrically opposite sides of the chamber wall for maintaining constant sliding engagement with the rotor, means positioned on diametrically opposite sides of the rotor for maintaining constant sliding engagement with the chamber wall, a combustion chamber having ports connecting with said first chamber on either side of one of said first mentioned means, intake and exhaust ports positioned on either side of the other 0i said first mentioned means, and a plate mounted. as an integral part of said rotor and extending outwardly therefrom to overlie the said ports in the combustion chamber and having spaced slots adapted to register alternately with one of said last mentioned ports and other spaced slots adapted to register alternately wit-l1 the other of said last mentioned ports.

5. A rotary motor comprising a shaft having a rotary piston and an annular apertured plate mounted thereon, a casing enclosing said piston and plate to form a chamber between the piston and easing, means posi tioned on diametrically opposite sides of the chamber wall for maintaining constant sliding engagement with the piston, means positioned on diametrically opposite sides of the piston for maintaining constant sliding engagement with the chamber wall, a combustion chamber having ports connecting with said first chamber on either side of one of said first mentioned means, intake and exhaust ports positioned on either side of the other of said first mentioned means, the said apertured plate extending into the combustion chamber and having ports formed therein registrable with said first mentioned ports.

6. The structure set forth in claim 3 in which the combustion chamber ports are offset both radially and circumferentiaily.

'7. A rotary motor comprising a casing having an annular chamber formed therein and inlet and exhaust ports communicating with the chamber, a shaft having a rotor thereon concentrically mounted in the chamber, means positioned on diametrically opposite sides of the chamber wall for maintaining constant sliding engagement with the rotor, means positioned on diametrically opposite sides of the rotor for maintaining constant sliding engagement with the chamber wall, a plate mounted on the side of said casing and extending inwardly a distance toward said shaft and having a pair of circumt'erentially and radially spaced ports formed therein and overlying the side of the said rotor, a combustion chamber mounted upon the outer side of said plate, and an annular plate mounted to rotate with the rotor and extending outwardly a distance to overlie said first plate and pass through the com bustion chamber and having ports formed therein registrable with the ports in said first plate.

GEORGE W. BURROWV. 

